[QUOTE=Damiana;994467]It's probably a medical condition then. I live in southern Cali and a friend of mine here still has to take 50000iu weekly because he is unable to absorb adequate vitamin d through the sun alone.[/QUOTE]
seems like something else is in play. maybe the body is doing it on purpose? did your friend improve ?
He is healthy and happy so I'd say it worked, but he did not notice a huge difference in his health before. The thing with vitamin and mineral deficiencies is that generally they don't cause a huge decrease in your quality of health for most people, just general fatigue and such, so it's hard to notice the effects of the treatments. It's not like pain where you can take as aspirin and feel the immediate effects.